171222 has 8 divisors (see below), whose sum is σ = 342456. Its totient is φ = 57072.

The previous prime is 171203. The next prime is 171233. The reversal of 171222 is 222171.

It is a sphenic number, since it is the product of 3 distinct primes.

171222 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14263 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (42807).

2¹⁷¹²²² is an apocalyptic number.

171222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171222 is a wasteful number, since it uses less digits than its factorization.

171222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28542.

The product of its digits is 56, while the sum is 15.

The square root of 171222 is about 413.7898017110. The cubic root of 171222 is about 55.5290003458.

Adding to 171222 its reverse (222171), we get a palindrome (393393).

It can be divided in two parts, 171 and 222, that added together give a palindrome (393).

The spelling of 171222 in words is "one hundred seventy-one thousand, two hundred twenty-two", and thus it is an iban number.